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#!/usr/bin/env python3
import argparse
import sys
import os
import struct
def main():
parser = argparse.ArgumentParser(description="Dump verbs from Apple EFI resource file")
parser.add_argument("file", nargs=1, help="Path to file")
parser.add_argument("--decode", action="store_true")
args = parser.parse_args()
file = args.file[0]
if not os.path.isfile(file):
return "%s does not exists or is not a file" % (file)
with open(args.file[0], "rb") as f:
f.seek(16)
size = struct.unpack("i", f.read(4))[0]
for i in range(int(size / 8)):
val = struct.unpack("i", f.read(4))[0]
print("0x{0:08X}".format(val), end="")
if (args.decode):
node_id = (val >> 20) & 0xffff
verb_id = (val >> 8) & 0xffff
payload = val & 0xffff
print(" (0x{0:02x} 0x{1:04x} 0x{2:02x})".format(node_id, verb_id, payload), end="")
print()
if __name__ == "__main__":
result = main()
if result:
print("error: %s" % result)
sys.exit(1)
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